CN105204099B - A kind of peep-proof brightness enhancement film and preparation method thereof - Google Patents
A kind of peep-proof brightness enhancement film and preparation method thereof Download PDFInfo
- Publication number
- CN105204099B CN105204099B CN201510601987.7A CN201510601987A CN105204099B CN 105204099 B CN105204099 B CN 105204099B CN 201510601987 A CN201510601987 A CN 201510601987A CN 105204099 B CN105204099 B CN 105204099B
- Authority
- CN
- China
- Prior art keywords
- peep
- layer
- proof
- brightness enhancement
- prism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
Abstract
The present invention relates to technical field of liquid crystal display, and in particular to a kind of peep-proof brightness enhancement film and preparation method thereof.Peep-proof brightness enhancement film includes substrate layer, prism structural layer and peep-proof film layer, substrate layer includes the first optical surface and the second optical surface, prism structural layer is coated on the first optical surface, peep-proof film layer is coated on the second optical surface, peep-proof film layer is micro- shutter layer, and micro- shutter layer includes the rib-like structure unit that several uniform intervals are set；Rib-like structure unit is made up of acrylic resin and reflectorized material.Peep-proof brightness enhancement film is solidified using Roll to Roll transfer printings and through UV light sources, prepares shaping prism structural layer and peep-proof film layer respectively.The peep-proof brightness enhancement film of the present invention, with good peep-proof effect while axial brightness is lifted, service life length, its preparation method is simple for process, has the advantages of high-effect, inexpensive, the large-scale production available for peep-proof brightness enhancement film.
Description
Technical field
The present invention relates to technical field of liquid crystal display, and in particular to a kind of peep-proof brightness enhancement film and preparation method thereof.
Background technology
At present, electronic display has obtained more and more extensive application in people's daily life.With living standard
Improve, people it is also proposed higher requirement for electronic display, and not requiring nothing more than electronic display has uniform high axial direction
Brightness and higher colour rendering index, because electronic display is increasingly appearing in public situation, it is desirable to electronical display
Screen also possesses good peep-proof effect simultaneously, and onscreen information can not be spied on by bystander, more effectively to protect business
Secret and individual privacy.
Liquid crystal display is because it has the advantages that energy consumption is low, in light weight, radiationless and flicker free, and as at present on the market
The electronic display of main flow.But liquid crystal as a kind of passive luminescent material, it is necessary to the display of image could be realized by backlight,
Backlight uses the LED of energy-conserving and environment-protective more and more at present, but individually backlight does not ensure that electronic display
Higher axial brightness and the uniformity of brightness, and LED belongs to lambert's body illuminating source, and its lighting angle is generally large, greatly
More at 120 ° or so, the confidentiality of display on-screen-display message can not be effectively ensured.Common method is that light is added on backlight
Learn element, such as light guide plate, diffusion barrier and brightness enhancement film, to ensure that LCDs has uniform high axial brightness.
Presently mainly one layer of peep-proof film is covered on the surface of LCDs to reach peep-proof effect, because peep-proof film is straight
Contact external environment, and the information input mode of many electronic displays is inputted using touch-control at present, and peep-proof membrane structure is held
Easily it is damaged because of multiple touching, and then loses the peep-proof function of film；On the other hand, when making peep-proof film, it will usually
Light absorbent, such as carbon black, iron oxide black, black spinel or dark red spar black light-absorbing material are added in glue.These extinction materials
Material can produce strong absorption to high angle scattered light so that the light transmittance of peep-proof film substantially reduces, and seriously reduces liquid crystal
The brightness of display screen, it is unfavorable for user and normally observes.
The content of the invention
In order to overcome shortcoming and defect present in prior art, it is an object of the invention to provide a kind of peep-proof brightness enhancement film
And preparation method thereof, the peep-proof brightness enhancement film is grown while axial brightness is lifted with good peep-proof effect, service life, its
Preparation method is simple for process, available for the large-scale production of peep-proof brightness enhancement film, has the advantages that high-effect, inexpensive.
The purpose of the present invention is achieved through the following technical solutions：
A kind of peep-proof brightness enhancement film, including substrate layer, prism structural layer and peep-proof film layer, the substrate layer include the first optics
Face and the second optical surface, the prism structural layer are coated on the first optical surface, and the peep-proof film layer is coated on the second optical surface, institute
It is micro- shutter layer to state peep-proof film layer, and micro- shutter layer includes the rib-like structure list that several uniform intervals are set
Member；
The raw material of the rib-like structure unit forms and parts by weight are：
Acrylic resin 90-100 parts
Reflectorized material 5-20 parts
The acrylic resin is polyurethane acrylic resin, polyester acrylate resin, in epoxy acrylic resin extremely
Few one kind.
Contain acrylic-functional and amino-formate bond in the molecule of urethane acrylate, the adhesive tool after solidification
There are high-wearing feature, adhesion, pliability, high-peeling strength and excellent resistance to low temperature and the polyacrylate of polyurethane tall and erect
Optical property and weatherability more, it is a kind of radiation curing material of high comprehensive performance；
Polyester acrylate resin is a kind of polyester-diol by low relative molecular mass through light prepared by acroleic acid esterification
Solidify oligomer, polyester acrylate resin price is relatively inexpensive, and viscosity is low, can not only be used for oligomer, can also be used as reactive diluent
Use.Preferably, the present invention is the polyester acrylate being modified using amine, can not only reduce the influence of oxygen inhibition, improves light and consolidates
Change speed, can also improve gloss, adhesive force and wearability etc..
Epocryl has the good characteristic of epoxy resin, but more goes out in terms of curability and mouldability
Color, it is loaded down with trivial details not as epoxy resin, it is a kind of heat-curing resin.It has excellent water resistance, hot water resistance, drug resistance
Property, caking property, toughness.
Further, the reflectorized material is at least one of titanium dioxide, silica and aluminum oxide.
Titanium dioxide has the advantages that nontoxic, good opacity, higher whiteness and brightness, while also has height
Refractivity and high photolytic activity, there is stronger uvioresistant to act on.Peep-proof film layer addition titanium dioxide can improve the light of optical film
Transmitance, lift the axial brightness of LCDs.
Silica has a good optical property, including high scattering, high whiteness, low-density and bright in color etc. are excellent
Point, it is added into the reflective that film layer can be improved in peep-proof film layer.
Aluminum oxide has higher finish and reflective function, and can improve the scratch-resistant ability of peep-proof film layer and durable
Property.
Further, the reflectorized material is in granular form, and reflectorized material particle diameter is 2-30 μm.Particle diameter is 2-30 μm
When, barrier of the reflectorized material particle to ultraviolet is that the reflective of peep-proof brightness enhancement film film can be improved based on reflecting, scatter.
Further, the raw material composition of the prism structural layer and parts by weight are：
Acrylate monomer 65-80 parts
Crosslinking agent 5-20 parts
Light trigger 3-17 parts
The acrylic monomers is 2- acrylic acid dioxygen base esters, acrylic acid 2,4, at least one in 6- tribromo ethyl phenoxies
Kind；
2- acrylic acid dioxygen base esters have excellent ozone resistants, air-tightness, resistance to flexion and resistance to breach growth property, Yi Jikang
Ultra violet discoloration etc.；
The molecular formula of acrylic acid 2,4,6- tribromo ethyl phenoxies is C9H5Br3O2, there is superior resistance to mineral oil and high temperature resistant
Oxidation susceptibility, there is excellent ozone resistants, air-tightness, resistance to flexion and resistance to breach growth property, and uvioresistant discolouration etc..
The crosslinking agent is at least one of pentaerythritol triacrylate, trimethylolpropane trimethacrylate；
Pentaerythritol triacrylate pentaerythritol triacrylate is that ester occurs for a pentaerythrite and three parts of acrylic acid
Change the acrylate that reaction obtains, intramolecular has a pendant hydroxyl group, on the one hand the presence of hydroxyl enhances the polarity of molecule,
Volatility is reduced, on the other hand, reaction site can be used as, be connected to by the method for grafting on other materials, for multiple
The preparation of condensation material；
Trimethylolpropane trimethacrylate is the vulcanization crosslinking for helping vulcanizing activator, participating in substrate layer of specific rubber
Reaction, can not only shorten cure time, improve sulphidity, but also significantly increase the mechanical strength of product, wearability, resistance to molten
Agent and corrosion resistance etc..
The light trigger is Benzophenone-type light initiator, the initiation of 2,4,6- trimethyl benzoyl diphenyl base phosphorescence
At least one of agent, double titanium cyclopentadienyl light triggers.
Benzophenone-type light initiator is a kind of hydrogen-capture-type light initiator, cheap, synthesis is simple, is easy to preserve, can
Applied to photocuring production and correlative technology field, benzophenone generates active ammonia free radical and can produced with oxygen reaction in system
Another free radical, oxygen inhibition effect can be eliminated.
2,4,6- trimethyl benzoyl diphenyl base phosphorescence initiators are a kind of height for having absorption in long wavelength range
Ultraviolet initiator is imitated, rear assembly effect is low, noresidue, for acrylatcs systems, can make with coordinating with amine or acrylamide
With, while compounded with other light triggers, to reach the thorough solidification of system.
Double titanium cyclopentadienyl light triggers have prominent space charge force, storage stability and hypotoxicity, and its absorbing wavelength has been prolonged
500nm is extended, there is larger absorption in visible region, the visible light polymerization solidification for acrylate is especially effective.Again
Because the photobleaching effect under titanium cyclopentadienyl illumination, glued membrane yellowness index are small;And deeply-curing is good, beneficial to the thorough solidification of thick film.
Further, the composition material of the substrate layer is one kind in PET, PC or PMMA, and substrate material light transmittance is big
In 90%, mist degree is less than 1%.
PET is polyethylene terephthalate, and its transparency is high, glossiness is good, has good mechanical property, resistance to
Folding endurance is good, can oil resistant, resistance to fatty, resistance to diluted acid, diluted alkaline and resistance to most of solvents, have excellent high- and low-temperature resistance performance, gas and
Vapor permeability is low.
PC is makrolon, its water white transparency, heat-resisting, shock resistance, there is good mechanicalness in commonly used temperature
Can, impact resistance is good, refractive index is high and processing characteristics is good.
PMMA is polymethyl methacrylate, is macromolecule transparent material most excellent at present, it is seen that light transmission rate reaches
92%, less than the half of simple glass, shatter-resistant ability is but higher by several times, has good insulating properties and mechanical strength its proportion,
There are stronger decay resistance, and easy processing to acid, alkali, salt.
Further, the composition material of the substrate layer is PET film, PC films, one kind in PMMA films, the base
Material thickness is 30-150 μm, and the light transmittance of substrate layer is more than 90%, and mist degree is less than 1%.
Further, the rib-like structure cell height is 50-300 μm, and width is 25-100 μm, adjacent ribs structure list
Spacing between member is 20-150 μm.
Further, the prism structural layer is by the prism group of several prism monomer compositions being placed equidistant, prism
The height of group is 12-25 μm, and the spacing between adjacent prisms monomer is 12-32 μm.
The cross section of the prism monomer is isosceles triangle, and the corner angle α of isosceles triangle is 85 ° -95 °, isosceles
The drift angle of triangle is wedge angle.Preferably, the corner angle is 90 °.The cross section of prism monomer can also be set to isosceles trapezoid,
Or the drift angle of isosceles triangle is changed to arc chord angle by wedge angle.The top of the prism monomer is wedge angle, platform or dome；It is flat
Platform is regular polygon, and the regular polygon length of side is 3-8 μm；Dome radius size is 3-8 μm.
The cross section of the prism monomer is isosceles trapezoid, and the top of the prism monomer is circular platform or regular polygon
Platform, platform are regular polygon, a length of 3-8 μm of polygon edge；Dome radius size is 3-8 μm.
A kind of preparation method of peep-proof brightness enhancement film, it is characterised in that：Comprise the following steps：
（1）Take transparent substrate material that substrate layer is made, applied using first optical surface of the drop glue formula gluing mode in substrate layer
Cloth the first base material glue layer, the preparation of prism structural layer use Roll-to-Roll transfer printings, by the micro- knot in surface in patterned roll
Structure is stamped into the first base material glue layer, and is prism structural layer through UV light sources curing molding；
（2）The second base material glue layer, peep-proof film layer are coated with using second optical surface of the glue formula gluing mode in substrate layer is dripped
Preparation use Roll-to-Roll transfer printings, the surface micro-structure in patterned roll is stamped into the second base material glue layer, and pass through
UV light sources curing molding is peep-proof film layer.
Roll-to-Roll transfer printings are volume to volume transfer printing, are a kind of high-effect, inexpensive continuous production modes, will
Surface micro-structure on patterned roll surface is stamped into the surface of base material glue layer, so as to obtain the structure complementary with surface micro-structure
Layer.Its advantage be by surface micro-structure directly on the surface of base material glue layer imprinting moulding, so as to obtain prism structural layer or
Person's peep-proof film layer, therefore the waste of material portions is not caused, efficiency can be improved, reduces cost.
Preferably, the base material glue layer uses optical grade acrylic glue.Optical grade acrylic glue is purple by UV
Outside line light action trigger the quick-setting transparent glue of glue, have curing rate is fast, shrinkage factor is low, middle low viscosity, high intensity,
High transparency, solvent-free, bubble-free, it is not atomized, the characteristic that water-tolerant and sealing property are excellent.
Preferably, the patterned roll is metal wheel, and patterned roll surface is provided with electrodeposited coating, and the thickness of electrodeposited coating is 100-
500 μm, the surface micro-structure of electrodeposited coating is process through the turning of single-point diamond cutter or laser forming.
The surface micro-structure of electrodeposited coating is process through the turning of single-point diamond cutter or laser forming.Preferably, it is described
The electrodeposited coating of patterned roll surface is layers of copper or nickel dam, is easy to carry out Precision Machining to surface micro-structure thereon.
Preferably, the drop glue formula coating method includes rubber head mould using drop glue formula coating system, drop glue formula coating system
Tool, glue bucket and corresponding control system, rubber head mould can ensure the uniformity and coating thickness of coating solution thickness
Controllability, coordinate control system, the gluing coating of different component and different viscosities glue can be met.
The peep-proof membrane preparation method of the present invention is simple and easy, has the advantages of high-effect, inexpensive, can flexibly control each
The coating thickness of layer, the large-scale production of suitable peep-proof brightness enhancement film.
The beneficial effects of the present invention are：The peep-proof brightness enhancement film of the present invention is provided with peep-proof film layer, can prevent side view angle
People is peeped, and effectively protects individual privacy；Peep-proof film layer is located in LCDs, is not contacted directly with the external world, can be effective
Avoid peep-proof film layer scrapes damage, increases the service life；Peep-proof film layer addition reflectorized material particle can improve the light transmittance of optical film,
Lift the axial brightness of LCDs；The preparation method of peep-proof brightness enhancement film is simple for process, has high-effect, inexpensive
Advantage, the large-scale production available for peep-proof brightness enhancement film.
The peep-proof brightness enhancement film of the present invention, with good peep-proof effect, service life length while axial brightness is lifted.
Brief description of the drawings
Fig. 1 is the backlight source module dimensional structure diagram of prior art.
Fig. 2 is the backlight source module dimensional structure diagram using the present invention.
Fig. 3 is the structural representation of the embodiment of the present invention 1.
Fig. 4 is the structural representation of the embodiment of the present invention 2.
Fig. 5 is the process schematic representation of present invention drop glue formula coating system.
Fig. 6 is the process schematic representation of prism structure formable layer of the present invention.
Reference includes：
10-backlight, 11-reflectance coating, 12-light guide plate
13-optics module 130-lower diffusion barrier 131-lower brightness enhancement film
132-go up brightness enhancement film 133-upper diffusion barrier 20-peep-proof film layer
21-substrate layer, 22-prism structural layer, 221-prism monomer
30-control system, 31-glue bucket 32-rubber head mould
41-preceding 42-patterned roll of pinch roller 43-rear pinch roller
44-UV light source 201-rib-like structure units.
Embodiment
For the ease of the understanding of those skilled in the art, the present invention is made with reference to embodiment and accompanying drawing 1-6 further
Explanation, the content that embodiment refers to not is limitation of the invention.
Embodiment 1
As shown in figure 1, the backlight source module of prior art includes backlight 10, reflectance coating 11, light guide plate 12 and optics
Film group 13, wherein optical film group 13 include set gradually from the bottom up lower diffusion barrier 130, lower brightness enhancement film 131, upper brightness enhancement film
132nd, upper diffusion barrier 133.
As Figure 2-3, peep-proof brightness enhancement film provided by the invention, the He of upper brightness enhancement film 132 of traditional backlight module can be replaced
Upper diffusion barrier 133.A kind of peep-proof brightness enhancement film of the present invention, including substrate layer 21, prism structural layer 22 and peep-proof film layer 20, it is described
Substrate layer 21 includes the first optical surface and the second optical surface, and the prism structural layer 22 is coated on the first optical surface, the peep-proof
Film layer 20 is coated on the second optical surface, and the peep-proof film layer 20 is micro- shutter layer, and micro- shutter layer 20 wraps
Include several uniform intervals and rib-like structure unit 201 is set.
The raw material of the rib-like structure unit 201 forms and parts by weight are：
90 parts of acrylic resin
20 parts of reflectorized material
The acrylic resin is polyurethane acrylic resin；
The reflectorized material is titanium dioxide.
Further, the reflectorized material is in granular form, and reflectorized material particle diameter is 10 μm.
Peep-proof brightness enhancement film uses micro- blinds window setting technique, the image of screen display is specialized in the viewing of user front, visible area
Domain is 60 °, i.e., peep-proof angle is 30 °, invisible beyond 30 ° of left and right.
Peep-proof brightness enhancement film is provided with peep-proof film layer 20, can prevent that the people at side view angle from being peeped, effectively protect individual privacy；
Peep-proof film layer 20 is located in LCDs, is not contacted directly with the external world, can effectively avoid peep-proof film layer 20 scrapes damage, and extension makes
Use the life-span；Peep-proof film layer 20, which adds reflectorized material, can improve the light transmittance of peep-proof brightness enhancement film, and the axial direction for lifting LCDs is bright
Degree.
Further, the raw material composition of the prism structural layer 22 and parts by weight are：
65 parts of acrylate monomer
20 parts of crosslinking agent
15 parts of light trigger
The acrylic monomers is 2- acrylic acid dioxygen base esters and the tribromo ethyl phenoxy of acrylic acid 2,4,6-, the two mass ratio
For 1：1.
The crosslinking agent is pentaerythritol triacrylate.
The light trigger is Benzophenone-type light initiator.
Further, the composition material of the substrate layer 21 is PET film, and the thickness d 1 of the substrate layer 21 is 50 μm.
Due to the setting of said structure, the light transmittance of substrate layer 2121 is 92%, mist degree 0.5%, has good transmitance and regards
Feel effect.
Further, the section of rib-like structure unit 201 is rectangle；The height d0 of rib-like structure unit 201 is
100 μm, width d3 is 85 μm, and the spacing d4 between adjacent ribs construction unit 201 is 85 μm.
Further, the prism group that the prism monomer 221 that the prism structural layer 22 is placed equidistant by several forms,
The height d2 of prism group is 25 μm, and the spacing d6 between adjacent prisms monomer 221 is 50 μm；The prism monomer 221 it is transversal
Face is isosceles triangle, and base length of side d5 is that the drift angle of 50 μm of isosceles triangles is wedge angle, and angle [alpha] is 90 °, prism monomer 221
Top be wedge angle.The setting of prism structural layer 22, light can be concentrated by improving light travel angle, reduce light loss simultaneously
Increase screen intensity, effectively reduce the generation of the adverse optical effect such as Newton's ring and moire interference, adjacent prisms monomer 221 is equidistant
Setting makes light be more evenly distributed.
A kind of preparation method of peep-proof brightness enhancement film, comprises the following steps：
（1）Take transparent substrate material that substrate layer 21 is made, first optics of the mode in substrate layer 21 is glued using drop glue formula
Face applies cloth base material glue layer, and the preparation of prism structural layer 22 uses Roll-to-Roll transfer printings, by the surface in patterned roll 42
Micro-structural is stamped into base material glue layer, and is prism structural layer 22 through UV light sources curing molding；
（2）Cloth base material glue layer, peep-proof film layer 20 are applied using second optical surface of the glue formula gluing mode in substrate layer 21 is dripped
Preparation use Roll-to-Roll transfer printings, the surface micro-structure in patterned roll 42 is stamped into base material glue layer, and through UV
Light source curing molding is peep-proof film layer 20.
Roll-to-Roll transfer printings are volume to volume transfer printing, are a kind of high-effect, inexpensive continuous production modes, will
Surface micro-structure on the surface of patterned roll 42 is stamped into the surface of base material glue layer, so as to obtain the knot complementary with surface micro-structure
Structure layer, its advantage be by surface micro-structure directly on the surface of base material glue layer imprinting moulding, so as to obtain prism structural layer
22 or peep-proof film layer 20, therefore the waste of material portions is not caused, efficiency can be improved, reduces cost.
Further, the base material glue layer uses optical grade acrylic glue.Optical grade acrylic glue is to pass through UV
Ultraviolet effect triggers the quick-setting transparent glue of glue, has that curing rate is fast, shrinkage factor is low, middle low viscosity, high-strength
Degree, high transparency, solvent-free, bubble-free, it is not atomized, the characteristic that water-tolerant and sealing property are excellent.
Further, the patterned roll 42 is metal wheel, and the electrodeposited coating on the surface of patterned roll 42 is that thickness is 300 μ m thicks
Layers of copper, the surface micro-structure of electrodeposited coating are process through the turning of single-point diamond cutter or laser forming.
As shown in figure 5, the drop glue formula coating method includes rubber head using drop glue formula coating system, drop glue formula coating system
Mould 32, glue bucket 31 and corresponding control system 30, by the setting of control system 30, accurately control the plastic emitting of glue bucket 31
Time and gel quantity, the uniformity and coating thickness of coating solution thickness can be ensured by the cooperation with rubber head mould 32
Controllability, so as to meet the gluing of different component and different viscosities glue be coated with.
As shown in fig. 6, each Rotating fields moulding process of the peep-proof brightness enhancement film uses shaping structures system, shaping structures system
System includes preceding pinch roller 41, patterned roll 42, rear pinch roller 43, the substrate layer 21 after the gluing of coated system by preceding pinch roller 41 and
During gap between patterned roll 42, a hydrops groove can be formed in the gap location, the preceding material of pinch roller 41 is rubber, by adjusting rubber
Glue hardness and preceding pinch roller surface temperature, can adjust the gap length between patterned roll 42 and preceding pinch roller 41 indirectly, so as to
The thickness of substrate layer 21 can be controlled.Specific regulative mode is as follows：Preceding pinch roller 41 is provided with hollow cyclic water channel, in coating process
Water is heated to design temperature through boiler, the hollow cyclic water channel of pinch roller 41 before being delivered to by water pump, so as to reach pinch roller before regulation
The purpose of 41 surface temperatures, temperature is higher, and rubber wheel degrees of expansion is bigger, and the gap between preceding pinch roller 41 and patterned roll 42 is got over
Small, the thickness of substrate layer 21 is smaller.By effective control of preceding pinch roller 41 and rear pinch roller 43, substrate material 40 can be effectively ensured
It is brought into close contact with patterned roll 42, the structure in patterned roll 42 can be effectively transferred on base material glue layer, so as to be formed and patterned roll
The complementary structure sheaf of 42 surface micro-structure.In moulding process, the UV light sources 44 of the lower end of patterned roll 42 enter to base material glue layer
Row solidification, so as to obtain prism structural layer 22 or peep-proof film layer 20.
The peep-proof brightness enhancement film of the present invention is provided with peep-proof film layer 20, can prevent that the people at side view angle from being peeped, effectively protection
Individual privacy；Peep-proof film layer 20 is located in LCDs, is not contacted directly with the external world, can effectively avoid scraping for peep-proof film layer 20
Damage, increases the service life；Peep-proof film layer 20, which adds reflectorized material particle, can improve the light transmittance of optical film, lift LCDs
Axial brightness；The preparation method of peep-proof brightness enhancement film is simple for process, the thickness of substrate layer 21 can be flexibly controlled, by flower
Different surface micro-structure patterns is set on line roller 42, can obtain the prism structural layer 22 and peep-proof film layer 20 of different size, can
Large-scale production for peep-proof brightness enhancement film.
Embodiment 2
As Figure 4-Figure 6, the present embodiment and the difference of embodiment 1 are：
The raw material of the rib-like structure unit 201 forms and parts by weight are：
100 parts of acrylic resin
5 parts of reflectorized material
The acrylic resin is polyester acrylate resin；
The reflectorized material is titanium dioxide, a diameter of 10 μm of the titanium dioxide granule.
Further, the raw material composition of the prism structural layer 22 and parts by weight are：
80 parts of acrylate monomer
10 parts of crosslinking agent
10 parts of light trigger
The acrylic monomers is 2- acrylic acid dioxygen base esters.
The crosslinking agent is trimethylolpropane trimethacrylate.
The light trigger is 2,4,6- trimethyl benzoyl diphenyl base phosphorescence initiators.
Further, the height d0 of rib-like structure unit 201 is 50 μm, and width d3 is 125 μm, adjacent ribs structure list
Spacing d4 between member 201 is 120 μm.
Further, the composition material of the substrate layer 21 is PET film, and the thickness d 1 of the substrate layer 21 is 50 μm.
Due to the setting of said structure, the light transmittance of substrate layer 21 is 92%, mist degree 0.5%, has good transmitance and vision
Effect.
Further, the substrate layer 21 is PET film；The thickness d 1 of the substrate layer 21 is 38 μm.Due to above-mentioned knot
The setting of structure, the light transmittance of substrate layer 21 are 93%, mist degree 0.3%, have good transmitance and visual effect.
Further, the prism group that the prism monomer 221 that the prism structural layer 22 is placed equidistant by several forms,
The height d2 of prism group is 15 μm, and the spacing d6 between adjacent prisms monomer 221 is 120 μm；The prism monomer 221 it is transversal
Face is substantially in isosceles triangle shape, and its drift angle is changed to arc chord angle by wedge angle, and the arc radius of arc chord angle is 5 μm, base length of side d5
For 30 μm；The top of prism monomer 221 is dome.Arc chord angle can reduce the scuffing in product superposition, assembling process.
Further, the patterned roll 42 is metal wheel, and the electrodeposited coating on the surface of patterned roll 42 is that thickness is 200 μ m thicks
Layers of copper, the surface micro-structure of electrodeposited coating are process through the turning of single-point diamond cutter or laser forming.
Remaining content of the present embodiment is same as Example 1, repeats no more here.
Embodiment 3
As shown in figures 2-6, the present embodiment and the difference of embodiment 1 are：
The raw material of the rib-like structure unit 201 forms and parts by weight are：
95 parts of acrylic resin
10 parts of reflectorized material
The acrylic resin is epoxy acrylic resin；
The reflectorized material is silica, a diameter of 2 μm of the silica dioxide granule.
Further, the prism structural layer 22 forms and parts by weight are：
80 parts of acrylate monomer
5 parts of crosslinking agent
17 parts of light trigger
The acrylic monomers is acrylic acid 2,4,6- tribromo ethyl phenoxies.
The crosslinking agent is pentaerythritol triacrylate and trimethylolpropane trimethacrylate, and the two mass ratio is 1：
1。
The light trigger is double titanium cyclopentadienyl light triggers.
Further, the height d0 of rib-like structure unit 201 is 25 μm, and width d3 is 50 μm, adjacent ribs structure list
Spacing d4 between member 201 is 12 μm.
Further, the composition material of the substrate layer 21 is PC films, and the thickness d 1 of the substrate layer 21 is 30 μm.By
In the setting of said structure, the light transmittance of substrate layer 21 is 91%, mist degree 0.7%, and there is good transmitance and vision to imitate
Fruit.
Further, the prism group that the prism monomer 221 that the prism structural layer 22 is placed equidistant by several forms,
The height d2 of prism group is 12 μm, and the spacing d6 between adjacent prisms monomer 221 is 12 μm；The prism monomer 221 it is transversal
Face is isosceles triangle, and base length of side d5 is 24 μm, and the corner angle α of isosceles triangle is 85 °, the top of prism monomer 221
For wedge angle.Due to the setting of said structure, the generation of the adverse optical effect such as Newton's ring and moire interference can be effectively reduced, between waiting
Light is set to be more evenly distributed every setting, the shape of prism monomer 221 is consistent, is more convenient for processing.
Further, the patterned roll 42 is metal wheel, and the electrodeposited coating on the surface of patterned roll 42 is that thickness is 100 μ m thicks
Nickel dam, the surface micro-structure of electrodeposited coating are process through the turning of single-point diamond cutter or laser forming.
Remaining content of the present embodiment is same as Example 1, repeats no more here.
Embodiment 4
As seen in figures 3-6, the present embodiment and the difference of embodiment 1 are：
The raw material of the rib-like structure unit 201 forms and parts by weight are：
92 parts of acrylic resin
18 parts of reflectorized material
The acrylic resin is epoxy acrylic resin；
The reflectorized material is aluminum oxide, a diameter of 20 μm of the alumina particle.
Further, the raw material composition of the prism structural layer 22 and parts by weight are：
70 parts of acrylate monomer
15 parts of crosslinking agent
15 parts of light trigger
The acrylic monomers is 2- acrylic acid dioxygen base esters and the tribromo ethyl phenoxy of acrylic acid 2,4,6-, the two ratio are
3：2.
The crosslinking agent is pentaerythritol triacrylate and trimethylolpropane trimethacrylate, and the two mass ratio is 1：
1。
The light trigger is benzophenones light trigger and double titanium cyclopentadienyl light triggers, and the two ratio is 1：1.
Further, the height d0 of rib-like structure unit 201 is 300 μm, and width d3 is 100 μm, adjacent ribs structure
Spacing d4 between unit 201 is 150 μm.
Further, the composition material of the substrate layer 21 is PMMA, and the thickness d 1 of the substrate layer 2121 is 150 μm.
The light transmittance of substrate layer 21 is 92%, mist degree 0.5%, has good transmitance and visual effect.
Further, the prism group that the prism monomer 221 that the prism structural layer 22 is placed equidistant by several forms,
The height d2 of prism group is 25 μm, and the spacing d6 between adjacent prisms monomer 221 is 27 μm；The prism monomer 221 it is transversal
Face is isosceles triangle, and base length of side d5 is 50 μm, and the corner angle α of isosceles triangle is 95 °, the top of prism monomer 221
For wedge angle.Due to the setting of said structure, the generation of the adverse optical effect such as Newton's ring and moire interference can be effectively reduced, between waiting
Light is set to be more evenly distributed every setting, the shape of prism monomer 221 is consistent, is more convenient for processing.
Further, the patterned roll 42 is metal wheel, and the electrodeposited coating on the surface of patterned roll 42 is the nickel that thickness is 500 μm
Layer, the surface micro-structure of electrodeposited coating are process through the turning of single-point diamond cutter or laser forming.
Remaining content of the present embodiment is same as Example 1, repeats no more here.
Embodiment 5
As Figure 4-Figure 6, the present embodiment and the difference of embodiment 2 are：
The raw material of the rib-like structure unit 201 forms and parts by weight are：
92 parts of acrylic resin
18 parts of reflectorized material
The acrylic resin is epoxy acrylic resin；
The reflectorized material is titanium dioxide, a diameter of 30 μm of the titanium dioxide granule.
Further, the raw material composition of the prism structural layer 22 and parts by weight are：
75 parts of acrylate monomer
20 parts of crosslinking agent
3 parts of light trigger
The acrylic monomers is 2- acrylic acid dioxygen base esters and the tribromo ethyl phenoxy of acrylic acid 2,4,6-, the two ratio are
2：3.
The crosslinking agent is pentaerythritol triacrylate and trimethylolpropane trimethacrylate, the two mass ratio 1：1.
The light trigger is benzophenones light trigger and 2,4,6- trimethyl benzoyl diphenyl base phosphorescence initiators,
The two quality is 1：1.
Further, the height d0 of rib-like structure unit 201 is 150 μm, and width d3 is 75 μm, adjacent ribs structure list
Spacing d4 between member 201 is 100 μm.
Further, the composition material of the substrate layer 21 is PET, and the thickness d 1 of the substrate layer 21 is 60 μm.It is described
The light transmittance of substrate layer 21 is 93%, mist degree 0.5%, has good transmitance and visual effect.
Further, the prism group that the prism monomer 221 that the prism structural layer 22 is placed equidistant by several forms,
The height d2 of prism group is 20 μm, and the spacing d6 between adjacent prisms monomer 221 is 20 μm；The prism monomer 221 it is transversal
The drift angle in face is arc chord angle, and the arc radius of arc chord angle is 3 μm, and the top of prism monomer 221 is dome.Arc chord angle can reduce production
Scuffing in product superposition, assembling process.
Further, the patterned roll 42 is metal wheel, and the electrodeposited coating on the surface of patterned roll 42 is the nickel that thickness is 300 μm
Layer, the surface micro-structure of electrodeposited coating are process through the turning of single-point diamond cutter or laser forming.
Remaining content of the present embodiment is same as Example 2, repeats no more here.
Embodiment 6
As Figure 4-Figure 6, the present embodiment and the difference of embodiment 2 are：
The raw material of the rib-like structure unit 201 forms and parts by weight are：
100 parts of acrylic resin
10 parts of reflectorized material
The acrylic resin is epoxy acrylic resin；
The reflectorized material is titanium dioxide, a diameter of 20 μm of the titanium dioxide granule.
Further, the raw material composition of the prism structural layer 22 and parts by weight are：
75 parts of acrylate monomer
15 parts of crosslinking agent
10 parts of light trigger
The acrylic monomers is 2- acrylic acid dioxygen base esters and the tribromo ethyl phenoxy of acrylic acid 2,4,6-, the two mass ratio
For 2：3.
The crosslinking agent is pentaerythritol triacrylate and trimethylolpropane trimethacrylate, and the two mass ratio is 2：
3。
The light trigger is Benzophenone-type light initiator, 2,4,6- trimethyl benzoyl diphenyl base phosphorescence initiators
With double titanium cyclopentadienyl light triggers, three's mass ratio is 2：1：1.
Further, the height d0 of rib-like structure unit 201 is 200 μm, and width d3 is 100 μm, adjacent ribs structure
Spacing d4 between unit 201 is 60 μm.
Further, the composition material of the substrate layer 21 is PET, and the thickness d 1 of the substrate layer 21 is 90 μm.It is described
The light transmittance of substrate layer 21 is 92%, mist degree 0.6%, has good transmitance and visual effect.
Further, the prism group that the prism monomer 221 that the prism structural layer 22 is placed equidistant by several forms,
The height d2 of prism group is 18 μm, and the spacing d6 between adjacent prisms monomer 221 is 27 μm；The prism monomer 221 it is transversal
Face is isosceles trapezoid, and base length of side d5 is 30 μm；The top of prism monomer 221 is platform, and the platform is square, it is described just
The a length of 5cm of Quad Sides.The top of prism monomer 221 is changed by wedge angle to be set to platform and can reduce product superposition, drawing in assembling process
Wound, light can be concentrated by improving light travel angle, reducing light loss simultaneously increases screen intensity, effectively reduce Newton's ring and
The generation of the adverse optical effects such as moire interference,
Further, the patterned roll 42 is metal wheel, and the electrodeposited coating on the surface of patterned roll 42 is the copper that thickness is 400 μm
Layer, the surface micro-structure of electrodeposited coating are process through the turning of single-point diamond cutter or laser forming.
Remaining content of the present embodiment is same as Example 2, repeats no more here.
Above-described embodiment is the preferable implementation of the present invention, and in addition, the present invention can be realized with other manner,
Do not depart from and any on the premise of present inventive concept obviously replace within protection scope of the present invention.
Claims (8)
- A kind of 1. peep-proof brightness enhancement film, it is characterised in that：Including substrate layer, prism structural layer and peep-proof film layer, the substrate layer bag The first optical surface and the second optical surface are included, the prism structural layer is coated on the first optical surface, and the peep-proof film layer is coated on Two optical surfaces, the peep-proof film layer are micro- shutter layer, and micro- shutter layer includes what several uniform intervals were set Rib-like structure unit；The raw material of the rib-like structure unit forms and parts by weight are：Acrylic resin 90-100 partsReflectorized material 5-20 partsThe acrylic resin is at least one in polyurethane acrylic resin, polyester acrylate resin, epoxy acrylic resin Kind；The reflectorized material is at least one of titanium dioxide, silica and aluminum oxide；The reflectorized material is in granular form, and reflectorized material particle diameter is 2-30 μm；The raw material of the prism structural layer forms and parts by weight are：Acrylate monomer 65-80 partsCrosslinking agent 5-20 partsLight trigger 3-17 partsThe acrylate monomer is 2- acrylic acid dioxygen base esters, acrylic acid 2,4, at least one of 6- tribromo ethyl phenoxies；The crosslinking agent is at least one of pentaerythritol triacrylate, trimethylolpropane trimethacrylate；The light trigger is Benzophenone-type light initiator, 2,4,6- trimethyl benzoyl diphenyl base phosphorescence initiators, double At least one of titanium cyclopentadienyl light trigger.
- A kind of 2. peep-proof brightness enhancement film according to claim 1, it is characterised in that：The composition material of the substrate layer is PET Film, PC films, one kind in PMMA films, the light transmittance of substrate layer are more than 90%, and mist degree is less than 1%.
- A kind of 3. peep-proof brightness enhancement film according to claim 1, it is characterised in that：The rib-like structure cell height is 50- 300 μm, width is 25-100 μm, and the spacing between adjacent ribs construction unit is 20-150 μm.
- A kind of 4. peep-proof brightness enhancement film according to claim 1, it is characterised in that：The prism structural layer is by several etc. The prism group of prism monomer composition away from setting, the height of prism group is 12-25 μm, and the spacing between adjacent prisms monomer is 12-32μm。
- A kind of 5. peep-proof brightness enhancement film according to claim 4, it is characterised in that：The cross section of the prism monomer is isosceles Triangle, the corner angle α of isosceles triangle is 85 ° -95 °.
- A kind of 6. preparation method of peep-proof brightness enhancement film described in claim 1-5 any one, it is characterised in that：Including following step Suddenly：(1) take transparent substrate material that substrate layer is made, using drop glue formula gluing mode substrate layer the first optical surface coating the One base material glue layer, the preparation of prism structural layer uses Roll-to-Roll transfer printings, by the surface micro-structure pressure in patterned roll Print is prism structural layer to the first base material glue layer, and through UV light sources curing molding；(2) the second optical surface the second base material glue layer of coating for dripping glue formula gluing mode in substrate layer, the system of peep-proof film layer are utilized It is standby to use Roll-to-Roll transfer printings, the surface micro-structure in patterned roll is stamped into the second base material glue layer, and through UV light Source curing molding is peep-proof film layer.
- A kind of 7. preparation method of peep-proof brightness enhancement film according to claim 6, it is characterised in that：The patterned roll is metal Wheel, patterned roll surface are provided with electrodeposited coating, and the thickness of electrodeposited coating is 100-500 μm, and the surface micro-structure of electrodeposited coating is through single-point gold Diamond cutter turning or laser forming are process.
- A kind of 8. preparation method of peep-proof brightness enhancement film according to claim 7, it is characterised in that：The electrodeposited coating is layers of copper Or nickel dam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510601987.7A CN105204099B (en) | 2015-09-21 | 2015-09-21 | A kind of peep-proof brightness enhancement film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510601987.7A CN105204099B (en) | 2015-09-21 | 2015-09-21 | A kind of peep-proof brightness enhancement film and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105204099A CN105204099A (en) | 2015-12-30 |
| CN105204099B true CN105204099B (en) | 2017-12-19 |
Family
ID=54951873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510601987.7A Active CN105204099B (en) | 2015-09-21 | 2015-09-21 | A kind of peep-proof brightness enhancement film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105204099B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842830A (en) * | 2016-03-18 | 2016-08-10 | 京东方科技集团股份有限公司 | Peep-prevention structure, manufacture method thereof and display device |
| CN106094059B (en) * | 2016-07-21 | 2018-09-11 | 京东方科技集团股份有限公司 | A kind of composite membrane, polaroid and display device for display |
| CN105974570B (en) * | 2016-07-22 | 2018-08-07 | 京东方科技集团股份有限公司 | light converging device and display device |
| CN106249404B (en) * | 2016-10-14 | 2018-09-11 | 上海天马微电子有限公司 | Peep-proof display device |
| CN107142036B (en) * | 2017-06-02 | 2020-10-16 | 东莞市纳利光学材料有限公司 | Anti-peeping printable anti-magnetic film and preparation method thereof |
| CN109975899B (en) * | 2017-12-28 | 2021-10-01 | 宁波长阳科技股份有限公司 | Peep-proof film |
| CN109735216A (en) * | 2018-12-21 | 2019-05-10 | 宁波江北激智新材料有限公司 | A kind of composition and a kind of anti-moisture absorption brightness enhancement film and its application |
| CN109827148B (en) * | 2019-04-16 | 2024-04-12 | 凯鑫森(上海)功能性薄膜产业股份有限公司 | Uniform light film for LED illumination and lamp module thereof |
| CN111025440A (en) * | 2019-12-31 | 2020-04-17 | 凯鑫森(上海)功能性薄膜产业有限公司 | Prism structure for laminating film and processing method and application thereof |
| CN112698544A (en) * | 2020-12-29 | 2021-04-23 | 苏州莱科光学科技有限公司 | Preparation method of light control film |
| CN112965228B (en) * | 2021-03-19 | 2023-01-31 | 重庆京东方显示照明有限公司 | Peep-proof film, display panel and display device |
| CN113942048B (en) * | 2021-09-08 | 2023-09-15 | 东莞市光志光电有限公司 | Processing method of optical film and display panel |
| CN114213691A (en) * | 2021-12-07 | 2022-03-22 | 宁波东旭成新材料科技有限公司 | Preparation method of peep-proof membrane |
| CN115016050A (en) * | 2022-05-10 | 2022-09-06 | 苏州中亿丰光电有限公司 | Illumination light synergistic anti-dazzle diffusion film and preparation method thereof |
| CN115873526B (en) * | 2022-11-10 | 2024-02-23 | 广东桑泰科技有限公司 | Peep-proof film with high light transmittance and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007279424A (en) * | 2006-04-07 | 2007-10-25 | Three M Innovative Properties Co | Privacy filter sheet and display device containing the same |
| CN102676071B (en) * | 2011-03-08 | 2014-07-16 | 东莞市纳利光学材料有限公司 | Method for preparing automatic-adsorption, ultrathin, anti-peeping and anti-scratching protective film |
| CN203549599U (en) * | 2013-11-22 | 2014-04-16 | 京东方科技集团股份有限公司 | Backlight module and liquid crystal display device |
-
2015
- 2015-09-21 CN CN201510601987.7A patent/CN105204099B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105204099A (en) | 2015-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105204099B (en) | A kind of peep-proof brightness enhancement film and preparation method thereof | |
| WO2018127129A1 (en) | Optical film utilizing antioxidation quantum dot polymer, and fabrication method and use thereof | |
| TWI548912B (en) | Front-lit reflective display device and method of front-lighting reflective display | |
| TWI541559B (en) | Back-lit transmissive display having variable index light extraction layer | |
| CN103687908A (en) | Molding material | |
| KR20080024471A (en) | Reflective polarizer and display device having the same | |
| CN106010348A (en) | OCA (optically clear adhesive) optical protecting tape for electronic products | |
| CN106066505B (en) | Complex reflex light polarizing film | |
| CN104991295A (en) | Brightness enhancement film having blue light resistance effect and manufacturing method thereof | |
| CN205038364U (en) | Peep -proof brightness enhancement film | |
| CN105524566B (en) | A kind of PET base protective films with blue light regulatory function | |
| KR20110062215A (en) | The method of a pdlc type light control body used light with long wavelength, the pdlc type light control body | |
| CN105542703A (en) | LOCA (liquid optically clear adhesive) for touch screen and preparation method of LOCA | |
| CN102676071A (en) | Method for preparing automatic-adsorption, ultrathin, anti-peeping and anti-scratching protective film | |
| CN106118442B (en) | A kind of optical film cold coating and its application | |
| CN104520360B (en) | Acrylic resin film and retro reflective tape | |
| CN108587507A (en) | A kind of eyeshield touch screen | |
| CN101493200A (en) | Backlight module | |
| JPH075440A (en) | Liquid crystal resin composition for light-controlling liquid crystal element | |
| CN206248879U (en) | A kind of backlight module and display device | |
| CN205750200U (en) | A kind of high rigidity electromagnetic shielding brightness enhancement film | |
| CN205787188U (en) | A kind of anti-blue light electromagnetic shielding brightness enhancement film | |
| KR20190078428A (en) | Optical film for improving contrast ratio, polarizing plate comprising the same and liquid crystal display apparatus comprising the same | |
| JP3799654B2 (en) | Liquid crystal optical element, manufacturing method thereof, and projection type liquid crystal display device | |
| US20220317502A1 (en) | Liquid crystal handwriting board and preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |